ELECTRIC VEHICLE CHARGING STATION LOCKING CABLE REEL

摘要

A cable reel assembly in an electric vehicle supply equipment (EVSE) having a reel around which a cable is coiled. A shaft supporting the reel bears discs that rotate with the reel, and calipers coupled to the discs stop them and the reel from rotating. The power L1 and L2 conductors in the cable are electrically connected to the discs, and the calipers are electrically connected to the power source for the EVSE so that the calipers provide mechanical and electrical connection when actuated. Optionally, slip rings coupled to the shaft are connected to the control pilot and proximity signal conductors in the cable. Thus, during cable re traction, the control pilot and proximity signals are still provided to the EVSE, but the power conductors are decoupled from the power source. Only when the calipers are actuated to brake the discs is current flow permitted.

主权项

1. A cable reel assembly of an EVSE, comprising:
a cable electrically connected to an EVSE connector at one end of the cable, the cable including a first conductor for carrying supply current between the EVSE and the connector; a reel around which the cable is wound or unwound; a first conductive member electrically connected to the first conductor at the other end of the cable; and a first caliper assembly having a closed position in which a first conductive pad of the first caliber assembly is clamped onto the first conductive member thereby electrically coupling the first conductive member to the EVSE and preventing the cable from being unwound from the reel, and an open position in which the first conductive pad is unclamped from the first conductive member thereby decoupling the first conductive member from the EVSE and freeing the cable to be wound around or unwound from the reel.